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https://issues.apache.org/jira/browse/JAMES-2098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Duprat resolved JAMES-2098.
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Resolution: Fixed
merged
> Improve SetInMailboxes speed
> ----------------------------
>
> Key: JAMES-2098
> URL: https://issues.apache.org/jira/browse/JAMES-2098
> Project: James Server
> Issue Type: Improvement
> Reporter: Tellier Benoit
>
> I was surprised to realise how SetInMailboxes operation is slow. See the
> attached screenshots for rationals. It was generated while sorting 2 weeks of
> email. Thus, I had an optimisation round on my free time. I found:
> - That we can avoid a read in StoreMessageIdManager by avoiding calling
> delete (which comes at the cost of extra reads).
> - We can avoid updating flags when none specified
> The last point implies:
> - Avoiding extra reads before updating flags
> - Avoiding noop updates of search engine
> - This noop updates is, in fact, a replace with current flags, which can
> compete with parallel flags updates. Thus, this optimisation also improve
> concurrent behaviours, by uncoupling SetFlags and SetInMailboxes
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